Definition of dahlia noun from the Oxford Advanced Learner's Dictionary

 

dahlia

 noun
noun
BrE BrE//ˈdeɪliə//
 
; NAmE NAmE//ˈdæliə//
 
 
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a large brightly coloured garden flower, often shaped like a ball Word Originmodern Latin, named in honour of Andreas Dahl (1751–89), Swedish botanist.
See the Oxford Advanced American Dictionary entry: dahlia